[O11y][GoLang] Resolve the conflict in host.ip field (#7494)

* revert changes

* update PR link in changelog.yml file

* address review comments

packages/golang/_dev/build/docs/README.md

@@ -35,6 +35,100 @@ You can use our hosted Elasticsearch Service on Elastic Cloud, which is recommen
 
 For step-by-step instructions on how to set up an integration, see the [Getting started](https://www.elastic.co/guide/en/welcome-to-elastic/current/getting-started-observability.html) guide.
 
+### Troubleshooting
+
+If host.ip is shown conflicted under ``logs-*`` data view, then this issue can be solved by reindexing the ``Heap`` and ``Expvar`` data stream's indices.
+To reindex the data, the following steps must be performed.
+
+1. Stop the data stream by going to `Integrations -> Golang -> Integration policies` open the configuration of Golang and disable the `Collect Golang metrics` toggle to reindex metrics data stream and save the integration.
+
+2. Copy data into the temporary index and delete the existing data stream and index template by performing the following steps in the Dev tools.
+
+```
+POST _reindex
+{
+  "source": {
+    "index": "<index_name>"
+  },
+  "dest": {
+    "index": "temp_index"
+  }
+}  
+```
+Example:
+```
+POST _reindex
+{
+  "source": {
+    "index": "logs-golang.heap-default"
+  },
+  "dest": {
+    "index": "temp_index"
+  }
+}
+```
+
+```
+DELETE /_data_stream/<data_stream>
+```
+Example:
+```
+DELETE /_data_stream/logs-golang.heap-default
+```
+
+```
+DELETE _index_template/<index_template>
+```
+Example:
+```
+DELETE _index_template/logs-golang.heap
+```
+3. Go to `Integrations -> Golang -> Settings` and click on `Reinstall Golang`.
+
+4. Copy data from temporary index to new index by performing the following steps in the Dev tools.
+
+```
+POST _reindex
+{
+  "conflicts": "proceed",
+  "source": {
+    "index": "temp_index"
+  },
+  "dest": {
+    "index": "<index_name>",
+    "op_type": "create"
+
+  }
+}
+```
+Example:
+```
+POST _reindex
+{
+  "conflicts": "proceed",
+  "source": {
+    "index": "temp_index"
+  },
+  "dest": {
+    "index": "logs-golang.heap-default",
+    "op_type": "create"
+
+  }
+}
+```
+
+5. Verify data is reindexed completely.
+
+6. Start the data stream by going to the `Integrations -> Golang -> Integration policies` and open configuration of integration and enable the `Collect Golang metrics` toggle and save the integration.
+
+7. Delete temporary index by performing the following step in the Dev tools.
+
+```
+DELETE temp_index
+```
+
+More details about reindexing can be found [here](https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html).
+
 ## Logs reference
 
 ### expvar

packages/golang/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "0.4.1"
+  changes:
+    - description: Resolve the conflict in host.ip field.
+      type: bugfix
+      link: https://github.com/elastic/integrations/pull/7494
 - version: "0.4.0"
   changes:
     - description: Rename ownership from obs-service-integrations to obs-infraobs-integrations

packages/golang/data_stream/expvar/fields/ecs.yml

@@ -18,5 +18,7 @@
   name: event.original
 - external: ecs
   name: event.type
+- external: ecs
+  name: host.ip
 - external: ecs
   name: service.address

packages/golang/data_stream/heap/fields/ecs.yml

@@ -18,5 +18,7 @@
   name: event.original
 - external: ecs
   name: event.type
+- external: ecs
+  name: host.ip
 - external: ecs
   name: service.address

packages/golang/docs/README.md

@@ -35,6 +35,100 @@ You can use our hosted Elasticsearch Service on Elastic Cloud, which is recommen
 
 For step-by-step instructions on how to set up an integration, see the [Getting started](https://www.elastic.co/guide/en/welcome-to-elastic/current/getting-started-observability.html) guide.
 
+### Troubleshooting
+
+If host.ip is shown conflicted under ``logs-*`` data view, then this issue can be solved by reindexing the ``Heap`` and ``Expvar`` data stream's indices.
+To reindex the data, the following steps must be performed.
+
+1. Stop the data stream by going to `Integrations -> Golang -> Integration policies` open the configuration of Golang and disable the `Collect Golang metrics` toggle to reindex metrics data stream and save the integration.
+
+2. Copy data into the temporary index and delete the existing data stream and index template by performing the following steps in the Dev tools.
+
+```
+POST _reindex
+{
+  "source": {
+    "index": "<index_name>"
+  },
+  "dest": {
+    "index": "temp_index"
+  }
+}  
+```
+Example:
+```
+POST _reindex
+{
+  "source": {
+    "index": "logs-golang.heap-default"
+  },
+  "dest": {
+    "index": "temp_index"
+  }
+}
+```
+
+```
+DELETE /_data_stream/<data_stream>
+```
+Example:
+```
+DELETE /_data_stream/logs-golang.heap-default
+```
+
+```
+DELETE _index_template/<index_template>
+```
+Example:
+```
+DELETE _index_template/logs-golang.heap
+```
+3. Go to `Integrations -> Golang -> Settings` and click on `Reinstall Golang`.
+
+4. Copy data from temporary index to new index by performing the following steps in the Dev tools.
+
+```
+POST _reindex
+{
+  "conflicts": "proceed",
+  "source": {
+    "index": "temp_index"
+  },
+  "dest": {
+    "index": "<index_name>",
+    "op_type": "create"
+
+  }
+}
+```
+Example:
+```
+POST _reindex
+{
+  "conflicts": "proceed",
+  "source": {
+    "index": "temp_index"
+  },
+  "dest": {
+    "index": "logs-golang.heap-default",
+    "op_type": "create"
+
+  }
+}
+```
+
+5. Verify data is reindexed completely.
+
+6. Start the data stream by going to the `Integrations -> Golang -> Integration policies` and open configuration of integration and enable the `Collect Golang metrics` toggle and save the integration.
+
+7. Delete temporary index by performing the following step in the Dev tools.
+
+```
+DELETE temp_index
+```
+
+More details about reindexing can be found [here](https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html).
+
 ## Logs reference
 
 ### expvar
@@ -174,6 +268,7 @@ An example event for `expvar` looks as following:
 | golang.expvar.obtained.total.bytes | The total bytes of memory obtained from the OS. | long | byte | gauge |
 | golang.expvar.pointer.lookups | The number of pointer lookups performed by the runtime. | long |  | gauge |
 | golang.expvar.stack.bytes | Bytes in stack spans. | long | byte | gauge |
+| host.ip | Host ip addresses. | ip |  |  |
 | input.type | Type of Filebeat input. | keyword |  |  |
 | service.address | Address where data about this service was collected from. This should be a URI, network address (ipv4:port or [ipv6]:port) or a resource path (sockets). | keyword |  |  |
 | tags | List of keywords used to tag each event. | keyword |  |  |
@@ -318,6 +413,7 @@ An example event for `heap` looks as following:
 | golang.heap.system.released.bytes | Bytes of physical memory returned to the OS. | long | byte | gauge |
 | golang.heap.system.stack.bytes | Bytes of stack memory obtained from the OS. | long | byte | gauge |
 | golang.heap.system.total.bytes | Bytes of heap memory obtained from the OS. | long | byte | gauge |
+| host.ip | Host ip addresses. | ip |  |  |
 | input.type | Type of Filebeat input. | keyword |  |  |
 | service.address | Address where data about this service was collected from. This should be a URI, network address (ipv4:port or [ipv6]:port) or a resource path (sockets). | keyword |  |  |
 | tags | List of keywords used to tag each event. | keyword |  |  |

packages/golang/manifest.yml

@@ -1,7 +1,7 @@
 format_version: 2.0.0
 name: golang
 title: Golang
-version: "0.4.0"
+version: "0.4.1"
 description: This Elastic integration collects metrics from Golang applications.
 type: integration
 categories: